glusterd/cli: Status detail cli parse check and vol geo status crash fix

Change-Id: I1841864273fc4242de15fbfcf76fd5de40269f28
BUG: 1006249
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/5889
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>